From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F8FFC2D0CE for ; Sun, 29 Dec 2019 17:26:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EEF0321D7E for ; Sun, 29 Dec 2019 17:26:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1577640376; bh=9Q1KOpc9Gr9mqP8t/Q9Bi0RQNfaCGH6IfPJ4qLdMIvk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QBagCoKh3mSOQ1FytI3u3zEwyXGbDq3fcyvPZI4loRhK2DIGChnJT454LoF048jyk Tl348omhtF1kiN3bTDFvai86DI4WyqzCgWOQ19SYcxBQCrGOyKE6rD/m14Zjpd8ODn favUfFcNXJvHMHKqyHz7W8+mUnuL4Ic7NLtFg31g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728145AbfL2R0P (ORCPT ); Sun, 29 Dec 2019 12:26:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:46930 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727734AbfL2R0L (ORCPT ); Sun, 29 Dec 2019 12:26:11 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 46D9420409; Sun, 29 Dec 2019 17:26:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1577640370; bh=9Q1KOpc9Gr9mqP8t/Q9Bi0RQNfaCGH6IfPJ4qLdMIvk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cbsHl3Uuy8Qm+3+qqrwRN0/cutP8z2kqpCh4IwvMNlz9k2zXTkR5GR6GRoRXeDI4Z 7O7rp8pukC8g1RnQO1GjY9Sl6ohnGNxyAcIhmCavVUONzzeZcTCGUQNX+NZlJXXhn0 I2afu6KlM78sYwGM3db+rbI9nrnOUM4HitFGsjaI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Pedersen , Johannes Berg , Sasha Levin Subject: [PATCH 4.14 131/161] mac80211: consider QoS Null frames for STA_NULLFUNC_ACKED Date: Sun, 29 Dec 2019 18:19:39 +0100 Message-Id: <20191229162438.526610307@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191229162355.500086350@linuxfoundation.org> References: <20191229162355.500086350@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Thomas Pedersen [ Upstream commit 08a5bdde3812993cb8eb7aa9124703df0de28e4b ] Commit 7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing") let STAs send QoS Null frames as PS triggers if the AP was a QoS STA. However, the mac80211 PS stack relies on an interface flag IEEE80211_STA_NULLFUNC_ACKED for determining trigger frame ACK, which was not being set for acked non-QoS Null frames. The effect is an inability to trigger hardware sleep via IEEE80211_CONF_PS since the QoS Null frame was seemingly never acked. This bug only applies to drivers which set both IEEE80211_HW_REPORTS_TX_ACK_STATUS and IEEE80211_HW_PS_NULLFUNC_STACK. Detect the acked QoS Null frame to restore STA power save. Fixes: 7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing") Signed-off-by: Thomas Pedersen Link: https://lore.kernel.org/r/20191119053538.25979-4-thomas@adapt-ip.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/status.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/status.c b/net/mac80211/status.c index b18466cf466c..fbe7354aeac7 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -856,7 +856,8 @@ static void __ieee80211_tx_status(struct ieee80211_hw *hw, I802_DEBUG_INC(local->dot11FailedCount); } - if (ieee80211_is_nullfunc(fc) && ieee80211_has_pm(fc) && + if ((ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)) && + ieee80211_has_pm(fc) && ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && !(info->flags & IEEE80211_TX_CTL_INJECTED) && local->ps_sdata && !(local->scanning)) { -- 2.20.1